Drop-out fuse transmission structure

Abstract

The invention relates to a drop-out fuse transmission structure, and belongs to the technical field of fuses, the drop-out fuse transmission structure comprises a bracket, a guide sleeve and a driving push rod, and the bracket is rotatably connected to a fixed point B by taking a connecting line F as an axis and can be in contact with a fuse tube; the guide sleeve is rotationally connected to the fixed point A by taking a connecting line F as an axis; the driving push rod slides in the guide sleeve, and the end, penetrating through the guide sleeve, of the driving push rod is fixed to the bracket. The driving push rod is pushed by external force to slide in the guide sleeve, then the bracket is pushed to rotate by the driving push rod, the rotating bracket can be in contact with the fuse tube, and the sliding driving push rod can be in contact with the fuse tube, so that the bracket can be driven to rotate to push the other end of the fuse tube to be lapped on a potential point D to realize closing; and the driving push rod can push the other end of the fuse tube to be separated from the potential point D to realize opening, so that the melt in the fuse can fall off without obstruction after being fused, and the safety of opening and closing operation of the fuse is improved.

Description

Technical Field

[0001] This invention relates to the field of fuse technology, and in particular to a drop-out fuse transmission structure. Background Technology

[0002] A fuse is an overcurrent protection device widely used in high and low voltage power distribution systems, control systems, and electrical equipment as a protector against short circuits and overcurrents. When a fault occurs in the power distribution system and the current exceeds the specified value, the fault current causes the fuse wire in the fuse to melt rapidly. The fuse tube then automatically drops under the action of the transmission structure, isolating the faulty circuit.

[0003] Currently, conventional fuses mainly rely on gravity drop, resulting in low reliability. Furthermore, since conventional fuses typically use methods such as pull ropes to control the drop of the fuse tube, the following problems exist: ① After the fusible element melts, a conventional fuse falls due to gravity, but the connecting rope still hinders the falling process of the fuse tube; ② Replacing a fuse usually requires manual climbing or using an insulated rod, which is inefficient and poses safety risks; ③ In outdoor environments, conventional fuses are susceptible to external factors such as wind and rain, which may cause them to malfunction. ④ The fixing method between the fuse tube and the bracket and transmission structure is simple, which poses a risk of accidental fall under the action of external forces such as strong winds.

[0004] Therefore, how to design an unobstructed, easily replaceable, and safe-to-operate drop-out fuse transmission structure is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a drop-out fuse transmission structure, which solves the technical problem that existing fuses rely on gravity to drop the fuse element and are easily obstructed by the pull rope.

[0006] The technical solution of this invention to solve the above-mentioned technical problems is as follows: a drop-out fuse transmission structure, the fuse including a fixing part and a fuse tube, the fixing part having fixed points A, B, C, and D spaced apart, the line E connecting the fixing point A and the fixing point B forming an angle α with the line F connecting the fixing point B and the fixing point C, the line G connecting the fixing point C and the fixing point D, and both the line E and the line F being perpendicular to the line G; one end of the fuse tube is rotatably connected to the fixing point C about the line F as an axis, and the other end can be snapped onto the fixing point D; including: a bracket, a guide sleeve, and a drive push rod. The bracket is rotatably connected to the fixed point B via a pivot shaft with the connecting line F as the axis and can contact the fuse tube; the guide sleeve is rotatably connected to the fixed point A via a pivot shaft II with the connecting line F as the axis; the drive push rod slides inside the guide sleeve and one end of it passing through the guide sleeve is fixed to the bracket to push the bracket to rotate, lift the other end of the fuse tube to engage with the potential point D, or make one end of the drive push rod contact the fuse tube, pushing the other end of the fuse tube to disengage from the potential point D.

[0007] The beneficial effects of this invention are: a novel drop-out fuse transmission structure is designed, in which an external force is first used to push the drive rod to slide within the guide sleeve, and then the drive rod is used to push the bracket to rotate. Since the rotating bracket can contact the fuse tube, and since the sliding drive rod can contact the fuse tube, the bracket can be driven to rotate and push the other end of the fuse tube to connect with the potential point D to achieve closing, and the drive rod can push the other end of the fuse tube to disengage from the potential point D to achieve opening. This allows the fuse element to fall off without obstruction after melting, improving the safety of the fuse opening and closing operations.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the bracket includes two L-shaped rods, a connecting rod, and a support rod. The two L-shaped rods are arranged along the length direction perpendicular to the connecting line F and are spaced apart along the length direction of the connecting line. The two ends of the connecting rod are respectively fixed to one end of the L-shape of the two L-shaped rods. The two ends of the support rod are respectively fixed to the other end of the L-shape of the two L-shaped rods. The corner of one L-shaped rod is rotatably connected to the fixed point B with the connecting line F as the axis. The fuse tube is located between the two L-shaped rods and between the connecting rod and the support rod. The support rod can contact the fuse tube.

[0010] Furthermore, the bracket also includes a sleeve, which is fitted over the support rod and can contact the fuse tube.

[0011] The further beneficial effect of adopting the above is that by using the sleeve to cover the outside of the support rod and contact the fuse tube, the direct collision between the support rod and the fuse tube can be avoided.

[0012] Furthermore, the support sleeve is made of insulating rubber material.

[0013] Furthermore, the included angle α is 30 to 90°. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the drop-out fuse transmission structure that drives the fuse tube according to the present invention; Figure 2This is a three-dimensional structural diagram of a drop-out fuse transmission structure according to the present invention. Figure 3 This is a schematic diagram of the transmission structure of a drop-out fuse according to the present invention.

[0015] The attached diagram lists the components represented by each number as follows: 1. Bracket; 11. L-shaped rod; 12. Connecting rod; 13. Support rod; 14. Support sleeve; 2. Guide sleeve; 3. Drive push rod; 4. Fuse tube; 5. Fixed point A; 6. Fixed point B; 7. Potential point C; 8. Potential point D. Detailed Implementation

[0016] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0017] like Figure 1 and Figure 3 As shown, a drop-out fuse transmission structure includes a fixed part and a fuse tube 4. The fixed part has fixed points A5, B6, C7, and D8 spaced apart. The line E connecting fixed points A5 and B6 forms an angle α with the line F connecting fixed point B6 and point C. The line G connects potential points C7 and D8, and both lines E and F are perpendicular to line G. One end of the fuse tube 4 is rotatably connected to potential point C7 about line F, and the other end can be snapped onto potential point D8. On D8; including: bracket 1, guide sleeve 2 and drive push rod 3. The bracket 1 is rotatably connected to the fixed point B6 via a rotating shaft with the connecting line F as the axis and can contact the fuse tube 4. The guide sleeve 2 is rotatably connected to the fixed point A5 via a rotating shaft with the connecting line F as the axis. The drive push rod 3 slides inside the guide sleeve 2 and one end of it passing through the guide sleeve 2 is fixed on the bracket 1 to push the bracket 1 to rotate, lift the other end of the fuse tube 4 to engage with the potential point D8, or make one end of the drive push rod 3 contact the fuse tube 4 and push the other end of the fuse tube 4 to disengage from the potential point D8.

[0018] like Figure 1 and Figure 2 As shown, in some specific embodiments, the bracket 1 may include two L-shaped rods 11, a connecting rod 12, and a support rod 13. The two L-shaped rods 11 are arranged along the length of the perpendicular connecting line F and are spaced apart along the length of the connecting line. The two ends of the connecting rod 12 are respectively fixed to one end of the L-shape of the two L-shaped rods 11. The two ends of the support rod 13 are respectively fixed to the other end of the L-shape of the two L-shaped rods 11. A corner of one L-shaped rod 11 is rotatably connected to a fixed point B6 about the connecting line F as its axis. A fuse tube 4 is located between the two L-shaped rods 11 and between the connecting rod 12 and the support rod 13. The support rod 13 can contact the fuse tube 4. like Figure 1 and Figure 2 As shown, in some specific embodiments, the bracket 1 may also include a sleeve 14, which is sleeved outside the bracket 13 and can contact the fuse tube 4.

[0019] Specifically, the sleeve 14 is made of insulating rubber material.

[0020] Specifically, the included angle α can be 30 to 90°.

[0021] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drop-out fuse transmission structure, the fuse comprising a fixing part and a fuse tube (4), wherein the fixing part has spaced fixing points A (5), B (6), C (7), and D (8), wherein the line E connecting the fixing point A (5) and the fixing point B (6) forms an angle α with the line F connecting the fixing point B (6) and the fixing point C, and the line G connecting the potential point C (7) and the potential point D (8) is a connecting line, wherein both the connecting line E and the connecting line F are perpendicular to the connecting line G; one end of the fuse tube (4) is rotatably connected to the potential point C (7) with the connecting line F as the axis, and the other end of the fuse tube (4) can be snapped onto the potential point D (8); characterized in that, include: Bracket (1), the bracket (1) is rotatably connected to the fixed point B (6) via a pivot about the connecting line F and can contact the fuse tube (4); Guide sleeve (2), the guide sleeve (2) is rotatably connected to the fixed point A (5) via a rotating shaft two with the connecting line F as the axis; Drive push rod (3), which slides inside the guide sleeve (2) and has one end fixed on the bracket (1) through the guide sleeve (2) to push the bracket (1) to rotate, lift the other end of the fuse tube (4) to engage with the potential point D (8), or make one end of the drive push rod (3) contact the fuse tube (4) to push the other end of the fuse tube (4) away from the potential point D (8).

2. The drop-out fuse transmission structure according to claim 1, characterized in that, The bracket (1) includes two L-shaped rods (11), a connecting rod (12), and a support rod (13). The two L-shaped rods (11) are arranged along the length direction perpendicular to the connecting line F and are spaced apart along the length direction of the connecting line. The two ends of the connecting rod (12) are respectively fixed to one end of the L-shape of the two L-shaped rods (11). The two ends of the support rod (13) are respectively fixed to the other end of the L-shape of the two L-shaped rods (11). The corner of one L-shaped rod (11) is rotatably connected to the fixed point B (6) with the connecting line F as the axis. The fuse tube (4) is located between the two L-shaped rods (11) and between the connecting rod (12) and the support rod (13). The support rod (13) can contact the fuse tube (4).

3. The drop-out fuse transmission structure according to claim 1, characterized in that, The bracket (1) also includes a sleeve (14), which is fitted over the support rod (13) and can contact the fuse tube (4).

4. The drop-out fuse transmission structure according to claim 3, characterized in that, The sleeve (14) is made of insulating rubber material.

5. The drop-out fuse transmission structure according to claim 1, characterized in that, The included angle α is 30° to 90°.

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